Duplex third-point support for brake-beams.



c. H. WILLIAMS, Jn.

DUPLEX THIRD POINT SUPPOBII IA'ORBBKE BBAMS.

APPLronrox rinnb 14,411.18. 1914 Patented w00t. 20, 1914.

2 SHEETS-SHEET 1.

C. H., WILLIAMS, Jn. DUPLEX rrYHIRD POINT SUPPORT PORBRAKB BEAMS. APPLICATION FILED MAR. 18, 1914.

Patented Oct. 20, 1914.

2 SHEETS-SHEET 2.

UNITED sTATEs PATENT oEErcE.

CHARLES H. WILLIAMS, JB., OE CHICAGO, ILLINOIS, ASSIGNOR TO CHICAGO RAILWAY EQUIPMENT COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION 0F ILLINOIS.

DUPLEX THIRD-POINT SUPPORT FOR BRAKE-BEANS.

Specification of Letters Patent.

Application led March 18, 1914. Serial No. 825,584.

To all whom 'it may concern.'

Be it known that I,` CHARLES H. Wn.- LIAMs, Jr., a citizen of the United States, residing at Chicago, Illinois, have invented a certain new and useful Improvement in Duplex Third-Point Supports for Brake- Beams, of which the following is a full, clear, and exact description, such as will enable'others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is a partial plan view of my improvement. Fig. 2 is a vertical sectional view. Fig. 3 is a vertical sectional view of a modified form. Fig. 4 is a similar view of another modified form.

In a former Patent No. 997,888, granted to me July 11, 1911, is represented what I conceive to be the' best way of preventing brake beam from becoming damaged in service and to insure even shoe wear and full brake beam efficiency. Certain railroads, however, have adopted vrecently, a light spring plank as thenl standard, and these, together with the use of very light hanger bars, offer an unsatisfactory base or support for the fastening of the third point spring at the center of the truck. Furthermore, in certain roads where slack adjusters are used at the center of the truck brake rigging, itis practically impossible/to use a single third point supporting spring at the center.

My present invention has been devised to take care of these conditions and in essential parts is similar to a construction shown in the Williamson Patent No. 567,428, dated September 8, 1896, with this diference, however, that I propose to use shoes on the beam which contact with the duplex spring supports in such a way that the beam will ride veasily and freely, permitting lateral movement in just the 'same way as the present centrally located third point su ort does.

y present improvement provides everything that my former patent disclosed except catching .and holdin the beam at the dee est part of the truss epth, but it offers dou le strength. easier beam rep1acement,etc.

In the drawings l indicates the spring plank of the truck to which is secured, at each side of the center of the beam, a duplex support 2.

3 is the compression member of the beam.

4 is the strut and 5 is the tension member.

In Figs. 1 and 2, the tension member, at

each side of the strut, is provided with a clip 6 carrying a rubbing surface or wearing shoe 7 for coperating with the upper surface of the duplex supporting spring 2.

By reference to F-ig. 1, it will be observed that this shoe affords a bearing disposed at right angles to the major axis of the duplex supporting spring and consequently the beam has freedom of movement 'without subjecting the tension member to the shearing action of the supporting spring which in time would reduce the strength of said tension member.

In Fig. 3 I have shown a two-part clip 8 embracing both the compression and tension members, the lower member of which two-part clip is provided with two wearing surface-shoes 9 and 10.

In Fig. 4 I have shown a one-piece clip 11 embracing the compression and tension members and having a single contact point 12 for engagement with the duplex supporting springs. In all forms of clips suitable fastening devices, in the form of bolts, are employedto hold the contiguous free ends together.

1. In combination with a truck having inclined duplex third point supporting members arranged on each side of its center, of a brake -beam having removable wear surfaces or shoes to coperate Withsaid inclined supports.

2. A truss brake beam having a clip securedI to its compression and tension members, one member of .said clip having one ormore wear surfaces or shoes.

In testimony whereof I hereunto aix my signature in the presence of two witnesses, this thirteenth day of March, 1914.

y CHARLES H. WILLIAMS, JR.'

copio: ot this patent my be obtained fox-sivo conto oooh. by addressing the commissioner of Patents,

Washington, D. 0J. 

